In descriptions of the Mexican species the differently colored flowers 
and the much longer spines suggest differences that an examination of 
fruit and seed characters may still further emphasize. 
16. Cactus goodrichii (Scheer) Kuntze. Rev. Gen. Pl. 260 (1891). 
Mamillaria goodrichii Scheer in Salm Cact. Hort. Dyck. 91 (1850). 
Globose or ovate, 5 to 7.5 cm. high, subsimple: tubercles ovate, short 
(3 to 5 mm.), somewhat corky and persistent, with dense wool in the 
young axils containing 5 to 8 stiff bristles: radial spines 11 to 15 (the 
uppermost one sometimes wanting), white and rigid, 5 to 7 mm. long, 
entangled with adjoining clusters; central spines 3 or 4 (often solitary in 
young plants), brownish-black,the upper ones divergent and straight 
(rarely showing a tendency to hook), the lower longer (9 to 10 mm.), 
stouter and hooked (usually upwards): flowers 12 to 18 mm, long, the 
petals yellowish-white with red midribs: fruit clavate and scarlet. (Ill. 
Cact. Mex. Bound. t. 8. figs. 9-14) Type: Scheer says that the plant was 
brought from the Island of "Corros" (Cedros?) by Dr. Goodrich, and 
"unfortunately perished in the gardens," which generally means that 
there is not a fragment of the type in existence. 
In dry ravines, from San Diego County, California, southward 
throughout Lower California and the neighboring islands (including 
Guadalupe Island). "Llavina." 
Specimens examined: California (Parry of 1850, 1875; Agassiz of 1872; 
Parish 450 of 1882 at Vallecito): Lower California (Gabb 18 of 1867; 
Brandegee of 1889 on Magdalena Island, and 240 of 1890 from San 
Jose del Cabo): also specimens cultivated in Gard. Salm-Dyck. 
By a misprint in Cact. Mex. Bound, the specific name appeared as 
"Goodridgii," and this error appears in almost every subsequent 
mention of the species, even in Watson's Bibliographical Index, 
although in Syn. Cact. and other references by Dr. Engelmann the 
correct form appears. 
17. Cactus pondii (Greene). 
Mamillaria pondii Greene, Pittonia, i, 268 (1889). 
Oval or cylindrical, from low to 30 cm. high, simple or sparingly 
branched: radial spines 20 to 30, white and slender; centrals 4 or 5, the
longest over 25 mm, long, rigid and strongly hooked, dark brown above 
the middle: flowers nearly 5 cm. long, bright, scarlet: fruit unknown. 
Type, Pond specimens in Herb. Greene. 
Cedros Island, off the west coast of Lower California. Fl. February. 
Unfortunately, the type specimen has been mislaid, so that no 
examination of it could be made. Evidently related to C. goodrichii, but 
differing in its much more robust habit, more numerous radials, much 
longer spines, and larger scarlet flowers. 
18. Cactus barbatus (Engelm.) Kuntze, Rev. Gen. Pl. 261 (1891). 
Mamillaria barbata Engelm. Wisliz. Rep. 22 (1848). 
Depressed-globose, about 4 cm. in diameter, simple: tubercles 8 mm. 
long, with naked axils: radial spines very numerous (50 to 60), in two 
series, 6 to 8 mm. long, the outer (about 40) slender but rigid and white, 
the inner (10 to 15) a little stouter and yellow; usually one central spine, 
stout and erect, hooked downwards, brownish: flowers 18 to 20 mm. 
long, rose-red: fruit oblong, 10 to 12 mm. long, green (when mature?): 
seeds minute, dark brown and lightly pitted. (Ill. Cact. Mex. Bound t. 6. 
figs. 9-12) Type, Wislizenus of 1846 in Herb. Mo. Bot. Gard. 
Central Chihuahua. Fl. May, in cultivation. 
Specimens examined: Chihuahua (Wislizenus of 1846, 1850): also 
specimens cultivated in Baumann's Garden in 1857, 1858; also growing 
in Mo. Bot. Gard. 1893. 
Dr. Engelmann observed a curious intermediate character in the origin 
of the flowers of this species, the first ones of the season appearing in 
the axils of the last tubercles of the preceding year, while the later ones 
develop from the axils of the first tubercles of the same season. The 
specimen growing in Mo. Bot. Gard, in 1893 had 3 central spines, one 
or two being hooked. 
19. Cactus grahami (Engelm.) Kuntze, Rev. Gen. Pl. 260 (1891). 
Mamillaria grahami Engelm. Syn. Cact. 262 (1856). 
Globose or at length ovate, 2.5 to 7.5 cm. high, simple or branched 
from the base and even cespitose: tubercles ovate, 6 mm. long, dilated 
at base (corky and persistent when old), with naked axils: radial spines 
15 to 30 in a single series, white, often dusky-tipped, slender but rigid, 
naked or puberulent, 6 to 12 mm. long, the shorter ones uppermost, the 
longer ones lateral; central spines 1 to 3, blackish from a paler base, the 
lower (often the only) one stouter and longer (6 to 18 mm.), hooked
upward, the one or two upper ones (when present) shorter and slenderer, 
divergent: flowers 2 to 2.5 cm. long, rose-colored: fruit 2 to 2.5 cm. 
long: seeds 0.8 to 1 mm. long, black and pitted. (Ill. Cact. Mex. Bound. 
t. 6. figs. 1-8) Type, Wright of 1852 and Bigelow of 1852 in Herb. Mo. 
Bot. Gard. 
In rocky places, from    
    
		
	
	
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